Le 12/02/14 18:48, Werner Almesberger a écrit :
Alan W Black wrote:
http://pandoralive.info/?cat=45
Ah yes, the joy of selecting a SoC :-) And if you really intend
to go bleeding edge, your life will be even more interesting and
you'll never want for pain ...
I think Olimex are doing some very nice trailblazing. They don't
seem to be in cahoots with any major chip maker so it's safe to
assume that the designs like the ones they make can actually be
reproduced without having a small army of FAEs permanently set
up camp in your lab. (Especially OMAP has a certain reputation
in that regard.)
Did I mention that Olimex even sell the chips they use ? Their
prices seem to be in the order of what Digi-Key charge.
Taking the thread late...
What's cool is that they even use "modern" chips with a hacker friendly
package (i.e non BGA) :
https://www.olimex.com/Products/OLinuXino/A13/A13-OLinuXino-WIFI/open-source-hardware
This one features a SoC containing a Cortex-A8 @1 GHz but with a
friendly eLQFP176 package
But before buying this kind of chip, you need to take care of checking
which pins are actually bond to the package so that you make sure you
have all the feature you need available. Check for pin muxing as well,
if you need feature A and B but both are pin muxed to the same pin it
can get really tricky...
Though there may be an alternative route, in taking a existing
board/device (such as Raspberry Pi, or an Odroid device and building
clam shell round it.
Naw, you want full control over the layout. Even if you'd manage
to cook up something that works with a "generic" board, doesn't
look outright horrible, and doesn't left-shift your budget by
two or three bits, you'd rue the decision the day you do your
first EMC testing.
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